To Be Fair if you Happy With your specific Setup and the Resolution it outputs, then i Would say No. That Being Said ive seen alot of comments on the forum about how Bad the Official Cables such as the Pound Perform, But i Myself Love to Tinker, Create and Modify Things, after Seeing the Wii2HDMI mod and Hearing about how Crisp and colourful the image was in Comparison and also the Thought of having an Internal HDMI Rather than a Specific Cable Setup it was a Better fit in My Dream of what i wanted from it. Taking the Old Box into the New Generation and prolonging its life use, also Pretty much everyone has a spare HDMI cable lying around where the OG Xbox Dport Cable is Uncommon unless bought offline. If you Ever wanted to Bust the Box out for a Retro Gaming Session its Alot more Compatable.
Ive Built RGH 360 Consoles also in the Hope of Reliving Some of The Golden Oldies in some variation of HD Glory but the fact that so many of the Original Xbox Games library are unsupported even after the Backwards Compatability and Modded Compatabilty update are applied is abit Shite. Adding the HDMI to the OG XBox is a way Cheaper alternative to a Tidy set of Cables and Also Enabled me to Play all of those Games I Long for when Fancying a Retro Session. In the End its all Down to Preference and What you want from it.
LONG LIVE THE BOX
Morris